Improvement in bung-cutters



w, cqsnawsme. Improvement in Bung- Cutters.

Patented May 23,1871.

Inventor Hand :tical shaft andof the face plates. I Q To enable others.skilled in the art to make and use my invention, I will nowproceed todescribe fully its construetionand manner. of operation.

.for themachinea l Anotr WI-LeELM GRISTlAN srnRNBnRejor' DAVENlORT,IOWA.

Letters Patent No. 115,253, dated May 23 1871 IMPROVEMENT INBUNG-CUTTERS.

The Schedulerefened to in these Letters Patent and making part of thesame.

To all thhom t'tmay concern;

Be it known that I, ADOLF WILHELM CRISTTAN STERNBERG, of Davenport, inthe county of Scott 1 and State of Iowa, have inveuteda new and improvedMachine for Cutting Cylindrical and Conical Forms; and I do herebydeclare that the following is a full and exact descriptionjof the same,reference being had to the accompauyingfldrawing and to the letters ofreference marked th ereon'. a a

' This inventionhas for its object the production of a machine capableof cutting cylindrical and conical forms, which may be readily adjustedto cut any desiredsize within the limits of the machine, andcondescrihed hereinafter. 1' In the drzttvinga 1 Figure 1 represents aside elevation of my improved sists in'certain details-of construction,as will be fully machine;

Figure 2 ,a plan through the line t ng. 1 Figure3, a sectional view ofthe arms of the ver 1 A represents any suitab1e frame-work or support 13represents a vertical shaft, which may revolve in any proper bearings,and be actuated by any suitable power. i

i I 'preferably employ as a bearing a cylindrical socket, a, whichprojects through the supporting-beam,

and is provided above with a. bearing-flange, a, as shown.- 1

The lower end of the shaft is provided uponopposite. sides with arms afig. 3, consisting of suitable piecesof metal, of proper strength andsize, which furnish ya. bearing, against which the cutters press when inoperation.

B represents a cylindrical socket, located upon the shaft A above thearms M, which is provided with boxes b b, the lower sides of which areslotted, to re- ,ceive the upper ends of the cutters, the latter beingsecured 'to. transverse shafts b b, provided with fric-, tion-rollers,as shown.

The socket B revolves with the shaft A, but is capable ofaverticalmovement thereon, being actuated by means of a lever, O, whichis secured to it by means of the bifurcated arms 0 'c, which areattached,

,by set-screws, tothe collars, held inplace by flanges "71 b, asshown. i

D D represent the cutters, which are held above by theboxes b b, asdescribed, and below by the plates to cut a cylinder,or inclined linesto cuta cone.

a? a fig. 3, secured to the arms a a, the plates a being provided with asuitable recess to receive the cutter, as shown. p

One of the holding-screws a passes through a slotted opening in theface-plate a, by which means the latter may be swung up or down upon theother'screw as a pivot, for the purpose of adjusting the position 'of.the cutters, as may-be desired.

Thelower ends of the cutters are provided with cutting-edges d d, theedge d being located upon the outside of one-and the inside of theother, in order that both cdgesof the groove maybe properly cut;

. E represents a vertical shaft provided with a disk, e, at its lowerend, as shown; This shaft has a vertical movement ina socketin the lowerend of the main shaft B, which is made hollow for that purpose, and issecured from displacement by means ,of a tran'sverse pin, 0', whichmoves in a slot of the shaft B, as

shown.

F represents a coiled spring, which is located upon the shaftBbetweenthe pin e and the lower edge of the socket a, as shown.

The operation is as follows:

Th'e cutters are first adjusted either in vertical lines This adjustmentis made by simply loosening the holding- ,screws and by' moviug theface-plates a to throw the" cutters into the desired position, wherethey "may be readily secured again by turning on the screws.

Motion is communicated to the machine in' any proper 'manner. Thematerial to be out is then placed beneath the cutters, the latter beingraised by means of the lever O, which lifts the socketBT, to which thecutters are attached, (the latter moving upward in the recesses oftheface-plates a). When the material'is thus placed, the lever is.ope'rated to bring the rapidly-revolving cutters down upon it, and todepress them. as the operation "of cutting. proceeds.

When the desired distance has been gone. through, the cutters are againraised by thelevers. During this movement, the disk e operates toprevent the worl; from rising with the cutters until the latter are freefrom it. Whenthis' point has been reached,however, the disk 2 is raisedwith the same movement of the lever, by means of thesocket B, the upperedge of which comes ,in contact with the pin 0' and causes it i to risewith the shaft E.

By. means of the friction-rollers on the shaft 7) the necessary movementof the upper ends of the'cutters,

as the lever is elevated and depressed, takes *place,

without undue friction and consequent injury to the machine. 7 Havingthus fully described my invention,

What I claim as new, and desire to secure by Let- This specificationsigned and witnessed this 22d day ters Patent, is of February, 1871. i

1. The combination of the sliding socket B with ADOLF WILHELM CRISTIANSTERNBERG. the pin 0, adapted to lift the shaft E within the stationaryshaft B, as described. Witnesses: 2. The slotted face-plate a, pivotedat a eom- HENRY O. F. JENSEN l bined with and constructed to adjust thecutter-D, JOHN HEUERMANNS.

substantially as described.

